Article
Chemistry, Physical
Ehsan Pooryousefy, Quan Xie, Yongqiang Chen, Colin D. Wood, Ali Saeedi, Ahmad Sari
Summary: This study reveals the dependence of wettability of high base number oil on factors such as water pH, ion type, and salinity. It highlights that pH plays a major role in wettability, while salinity and ion type play a secondary role.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Suparit Tangparitkul, Chris S. Hodges, Dewi A. Ballard, Zhen Niu, Diego Pradilla, Thibaut V. J. Charpentier, Zhenghe Xu, David Harbottle
Summary: Experimental results show that low-salinity injection can improve oil recovery at different temperatures and pressures; the optimal brine concentration can achieve maximum dewetting effects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Daniel Isong Otu Egbe, Ashkan Jahanbani Ghahfarokhi, Menad Nait Amar, Ole Torsaeter
Summary: Low-salinity waterflooding (LSWF) has been studied for its impact on ion exchange and wettability alteration in carbonate cores to improve oil recovery. The results show wettability alteration is crucial for the increased oil recovery during LSWF, with sensitivity analysis on key parameters performed for process optimization.
NATURAL RESOURCES RESEARCH
(2021)
Article
Chemistry, Physical
Rishabh Tripathi, Bidesh Kumar Hembram, Krishna Raghav Chaturvedi, Tushar Sharma, Vishnu Chandrasekharan Nair
Summary: This study investigates the effect of low salinity brines on the wettability alteration of carbonate rocks. The results show that gypsum has the largest impact on rocks containing both calcite and dolomite, while calcium sulfate has the largest impact on rocks containing only calcite. The presence of calcite and dolomite leads to less wettability alteration compared to rocks containing only dolomite, but higher temperatures and the presence of calcite can further improve oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Rohit Kumar Saw, Prathibha Pillai, Ajay Mandal
Summary: In recent decades, low salinity water flooding (LSWF) has gained attention for its effectiveness in oil recovery. However, there is a lack of studies in the literature on the potential of using Ionic Liquids (ILs) as candidates for chemical enhanced oil recovery (CEOR) combined with LSWF. This study evaluates the synergistic effect of ILs with varying chain lengths with low saline ion tuned seawater (ITSW) for enhanced oil recovery from carbonate reservoirs. The analysis shows that ILs demonstrate a better synergistic effect with ITSW, reducing interfacial tension, altering rock wettability, and exhibiting less adsorption density at the reservoir temperature. ILs with the longest chain length ([C12mim] [BF4]) show superior properties and significantly increase oil recovery in low saline ITSW.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Green & Sustainable Science & Technology
Alexander Fernando Lauvandy, Faiz Akbar Raihananda, Evan Philander, Nur Hasyyati Luqiyana, Bentang Arief Budiman, Maya Fitriyanti, Firman Bagja Juangsa, Poetro Sambegoro
Summary: This study aims to improve the performance of floating solar still by altering the wettability and contact angle hysteresis of the cover surface. The results show that while wettability does not significantly affect transmissivity and absorber temperature, low contact angle hysteresis in the anti-fog film increases water collection. Additionally, the distilled water has a lower microbial content, making it suitable for domestic use.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Energy & Fuels
Osamah Alomair, Mabkhout Al-Dousari, C. Nyeso Azubuike, Ali Garrouch
Summary: This study experimentally investigated the coupled effects of hydrophilic SiO2 nanoparticles and low-salinity water on the wettability of synthetic clay-free Berea sandstone. The results showed that the wettability alteration intensified as the brine salinity decreased and the NP mass fraction increased.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Chemistry, Physical
Mehdi Sadeghi, Rohallah Hashemi, Hamidreza Shahverdi
Summary: A reliable flotation method was developed and experimentally evaluated for quantitative wettability measurement, showing good consistency with contact angle measurement in salinity and nanofluid tests. Two flotation mechanisms for the oil/water/rock system were introduced and one of them was empirically confirmed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Energy & Fuels
Erfan Hosseini, Zhongwei Chen, Mohammad Sarmadivaleh, Dana Mohammadnazar
Summary: This study experimentally investigated the impact of high- and low-salinity and smart water injection on wettability alteration and recovery improvement in an Iranian South oil reservoir. Results showed that dilution of seawater to 2000 ppm had the most impact on wettability alteration, and the study also examined the effect of ion change on the results.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Energy & Fuels
Osamah Alomair, Mabkhout Al-Dousari, Nyeso Azubuike, Ali A. Garrouch
Summary: LSW flooding is a promising technique for improving oil recovery, but there are still disagreements on the underlying mechanisms. This study quantitatively evaluated the effects of LSW flooding on rock wettability alteration and oil recovery enhancement, and found that there were minor changes in wettability and limited improvement in oil recovery.
Review
Energy & Fuels
Soumitra B. Nande, Samarth D. Patwardhan
Summary: Low salinity waterflooding has become an important method for additional oil recovery from carbonate reservoirs in recent years. However, existing literature lacks a comprehensive understanding of the underlying mechanisms. This paper provides a detailed review and analysis of research on low salinity waterflooding in carbonates, and offers a roadmap for future research in the field.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Engineering, Petroleum
Tianzhu Qin, Paul Fenter, Mohammed AlOtaibi, Subhash Ayirala, Ali AlYousef
Summary: Controlled-ionic-composition waterflooding can alter carbonate mineral wettability and improve oil recovery. Experimental results indicate that water with higher sulfate ion concentrations is more effective in displacing oil in carbonate rock samples.
Article
Chemistry, Physical
Jie Meng, Changdong Li, Shengyi Yan, Shuang Zhang, Huawei Zhang, Guihua Wang, Xin Yang
Summary: The salinity regulation of clay minerals wettability is significant in various research areas. In this study, molecular dynamics simulations were used to investigate the mechanism of how salinity affects surface wettability. The results demonstrated that the contact angle of droplets increased linearly with the rising salt concentration. The concentration of ions in the hydration layer was found to impact the density of the hydrogen bond network more than the water structure density.
APPLIED CLAY SCIENCE
(2022)
Article
Multidisciplinary Sciences
Ahmed M. Selem, Nicolas Agenet, Ying Gao, Ali Q. Raeini, Martin J. Blunt, Branko Bijeljic
Summary: X-ray micro-tomography was used to study fluid distribution and oil recovery during low salinity waterflooding in complex carbonate rock, revealing that smaller pores were invaded by low salinity brine leading to fluid redistribution and improved oil recovery.
SCIENTIFIC REPORTS
(2021)
Article
Energy & Fuels
Xi Chen, Jiahui Gao, Cunbao Deng, Shaocheng Ge, Chaonan Fan, Wei Zhang
Summary: This study investigated the influence of cation and anion ions in ionic liquids on functional groups and coal wettability. The results showed that the ions in ionic liquids significantly altered the framework of the coal and improved the coal's wetting behavior. Additionally, the content of C=O and OH... groups had the greatest correlation with the contact angle.
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.